From: Soren Brinkmann <soren.brinkmann@xilinx.com>
To: Michal Simek <michal.simek@xilinx.com>,
Russell King <linux@arm.linux.org.uk>
Cc: linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
Soren Brinkmann <soren.brinkmann@xilinx.com>
Subject: [PATCH 2/3] arm: zynq: slcr: Clean up #defines
Date: Wed, 17 Jul 2013 10:10:14 -0700 [thread overview]
Message-ID: <1374081015-31431-3-git-send-email-soren.brinkmann@xilinx.com> (raw)
In-Reply-To: <1374081015-31431-1-git-send-email-soren.brinkmann@xilinx.com>
Use a common naming scheme for register offset #defines:
Some of those used a '_OFFSET' suffix to distinguish them from others.
This scheme is used for all register offsets now.
Separate the register offset #defines from others and sort them in
increasing order.
Signed-off-by: Soren Brinkmann <soren.brinkmann@xilinx.com>
---
arch/arm/mach-zynq/slcr.c | 25 ++++++++++++-------------
1 file changed, 12 insertions(+), 13 deletions(-)
diff --git a/arch/arm/mach-zynq/slcr.c b/arch/arm/mach-zynq/slcr.c
index 232c275..44a4ab6 100644
--- a/arch/arm/mach-zynq/slcr.c
+++ b/arch/arm/mach-zynq/slcr.c
@@ -19,17 +19,16 @@
#include <linux/clk/zynq.h>
#include "common.h"
-#define SLCR_UNLOCK_MAGIC 0xDF0D
-#define SLCR_UNLOCK 0x8 /* SCLR unlock register */
-
+/* register offsets */
+#define SLCR_UNLOCK_OFFSET 0x8 /* SCLR unlock register */
#define SLCR_PS_RST_CTRL_OFFSET 0x200 /* PS Software Reset Control */
+#define SLCR_A9_CPU_RST_CTRL_OFFSET 0x244 /* CPU Software Reset Control */
+#define SLCR_REBOOT_STATUS_OFFSET 0x258 /* PS Reboot Status */
+#define SLCR_UNLOCK_MAGIC 0xDF0D
#define SLCR_A9_CPU_CLKSTOP 0x10
#define SLCR_A9_CPU_RST 0x1
-#define SLCR_A9_CPU_RST_CTRL 0x244 /* CPU Software Reset Control */
-#define SLCR_REBOOT_STATUS 0x258 /* PS Reboot Status */
-
void __iomem *zynq_slcr_base;
/**
@@ -44,15 +43,15 @@ void zynq_slcr_system_reset(void)
* Note that this seems to require raw i/o
* functions or there's a lockup?
*/
- writel(SLCR_UNLOCK_MAGIC, zynq_slcr_base + SLCR_UNLOCK);
+ writel(SLCR_UNLOCK_MAGIC, zynq_slcr_base + SLCR_UNLOCK_OFFSET);
/*
* Clear 0x0F000000 bits of reboot status register to workaround
* the FSBL not loading the bitstream after soft-reboot
* This is a temporary solution until we know more.
*/
- reboot = readl(zynq_slcr_base + SLCR_REBOOT_STATUS);
- writel(reboot & 0xF0FFFFFF, zynq_slcr_base + SLCR_REBOOT_STATUS);
+ reboot = readl(zynq_slcr_base + SLCR_REBOOT_STATUS_OFFSET);
+ writel(reboot & 0xF0FFFFFF, zynq_slcr_base + SLCR_REBOOT_STATUS_OFFSET);
writel(1, zynq_slcr_base + SLCR_PS_RST_CTRL_OFFSET);
}
@@ -64,9 +63,9 @@ void zynq_slcr_cpu_start(int cpu)
{
/* enable CPUn */
writel(SLCR_A9_CPU_CLKSTOP << cpu,
- zynq_slcr_base + SLCR_A9_CPU_RST_CTRL);
+ zynq_slcr_base + SLCR_A9_CPU_RST_CTRL_OFFSET);
/* enable CLK for CPUn */
- writel(0x0 << cpu, zynq_slcr_base + SLCR_A9_CPU_RST_CTRL);
+ writel(0x0 << cpu, zynq_slcr_base + SLCR_A9_CPU_RST_CTRL_OFFSET);
}
/**
@@ -77,7 +76,7 @@ void zynq_slcr_cpu_stop(int cpu)
{
/* stop CLK and reset CPUn */
writel((SLCR_A9_CPU_CLKSTOP | SLCR_A9_CPU_RST) << cpu,
- zynq_slcr_base + SLCR_A9_CPU_RST_CTRL);
+ zynq_slcr_base + SLCR_A9_CPU_RST_CTRL_OFFSET);
}
/**
@@ -103,7 +102,7 @@ int __init zynq_slcr_init(void)
}
/* unlock the SLCR so that registers can be changed */
- writel(SLCR_UNLOCK_MAGIC, zynq_slcr_base + SLCR_UNLOCK);
+ writel(SLCR_UNLOCK_MAGIC, zynq_slcr_base + SLCR_UNLOCK_OFFSET);
pr_info("%s mapped to %p\n", np->name, zynq_slcr_base);
--
1.8.3.3
next prev parent reply other threads:[~2013-07-17 17:10 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-07-17 17:10 [PATCH 0/3] arm: zynq: SLCR clean up Soren Brinkmann
2013-07-17 17:10 ` [PATCH 1/3] arm: zynq: slcr: Remove redundant header #includes Soren Brinkmann
2013-07-17 17:10 ` Soren Brinkmann [this message]
2013-07-17 17:10 ` [PATCH 3/3] arm: zynq: slcr: Use read-modify-write for register writes Soren Brinkmann
2013-07-18 7:21 ` Steffen Trumtrar
2013-07-18 15:45 ` Sören Brinkmann
2013-07-26 12:15 ` [PATCH 0/3] arm: zynq: SLCR clean up Michal Simek
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